Given f(x) and g(x) = k⋅f(x), use the graph to determine the value of k.

two lines labeled f of x and g of x. line f of x passes through points negative 4, 0 and negative 2, 2. line g of x passes through points negative 4, 0 and negative 2, negative 10.

a) −5
b)negative one fifth
c)one fifth
d)5